The preferential degradation, rather than recycling, of internalized ____ opioid receptors following endocytosis leads to a loss of these receptors, which is believed to result in the development of opioid tolerance

Male-female differences in sexual behavior are evidence for sociobiology because

(a) they differ radically from culture to culture (b) they are unconfounded by cultural differences (c) they are so similar from culture to culture (d) other cultural phenomena, such as standards concerning clothing, religion and politics, are much more variable from one culture to another

What factor has been shown to magnify the benefits of intergroup contact?

a. competition b. the Internet c. friendship d. mixed groups e. none of the above